package com.hmdp.utils;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * Created by Lenovo
 * DATA:2023/11/5
 **/
public class RefreshTokenInterceptor implements HandlerInterceptor {
    private StringRedisTemplate stringRedisTemplate;
    public RefreshTokenInterceptor(StringRedisTemplate stringRedisTemplate){
        this.stringRedisTemplate = stringRedisTemplate;
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1.获取请求头中的token
        String token = request.getHeader("authorization");
        if(StrUtil.isBlank(token)){
            return true;
        }
        //2.基于token获取redis中的用户
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash().entries(RedisConstants.LOGIN_USER_KEY + token);
        //3.判断用户是否存在
        if(userMap.isEmpty()){
            //4.不存在，拦截
            return true;
        }
        //将查询到的Hash数据转化为UserDTO对象
         UserDTO user =BeanUtil.fillBeanWithMap(userMap,new UserDTO(),false);//第三个参数表示要不要忽略转化过程中的错误。
//5.存在,保存用户信息到ThreadLocal
        UserHolder.saveUser(user);
        //刷新token有效期
        stringRedisTemplate.expire("login:token:" + token, 30, TimeUnit.MINUTES);
        return true;
    }
}
